Walking beam



Nov. 17, 1925.

,1. vo. KEEFovx-:R

WALKING BEAM MY k mv u x l \N1\ f B H n h4 5, NY; n W. A d n Y n n... Q., UQNW@ llll oo am l, .f... NNN.. .r\\\\ HNI Nkvmf INVENTOR @7571,20 03669601167' BY y ATTORNEYS Patented Nov. 17, 1925.

UNITED STATES JOHN O. KEEFOVER, 0F TULSA, OKLAHOMA.

WALKING BEAM.

Application filed August 3, 1925.1 Serial No. 47,963.

To aM whom it may concern.'

Be it known that I, JOHN O. Knnrovna, a citizen of the United States, and resident ofTulsa, in thev county of Tulsa and State of Oklahoma, have invented certain new and useful Improvements in Walking Beams, of which the following is a speci` iication.

This invention relates to improvements in well rigging, particularly to improvements in walking beams, and it consistsof the con struction, combinations and arrangements herein described and claimed.

An object of the invention is to adapt the walking beam of an oil well rigging lto the purpose of operating a pump, the particular improvement residing in the revision of an auxiliary Walking beam whic rides upon ythe main walking beam and operates in such a manner as to increase the stroke of the pump .and thereby increase the output of the well without requiring the ap lica-v tion of increased power to the main wa king beam.

'Other objects and advantages will be apparent from the following specification, reference being had to the Jaccompanying drawing,y in which- Figure l is a side elevation of a walking beam and some of the associated mechanism and showingthe auxiliary walking beam in position.

Figure 2 is a detail perspective view through a portion of the main walking beam, again showing the auxiliary walking beam.

It is not an uncommon practice to extract oil from a well by pumping. The necessity 'for pumping arises when the oil has lost v-its i'essure so that it fails to rise to the sur ace. It is also quite common to employ' the customary walking beam of an ordinary well rigging as the actuating member of the pump. f t

In Figures 1 and 2 the main walking beam l'is journaled at 2 u on the fixed standard 3.y Thelmain wal ing beam isvrocked upon its journal by the crank of the bull wheel 5. through the connecting rod 6.

f The`oil well rigging includes a main sill 7.

i Mounted uponl the free extremity of the` main Walking beam 1 is the auxiliary walking beam 8. This walking beam has 'a trun- `nion 9 which rests in and rocks upon a saddle 10 suitably af'xed .to the main walking beam. The extremities of the auxiliary walking beam carry iron plates which are appropriately bent to form yokes 11 andy 12, i

the purpose of which is to prevent cutting of the wire ropes 13 and 14 the bights of which are applied thereto.

The f wire rope or other flexible member 13 is fixed at 15 to the main sill 7 and performs the function of restraining the auxiliary walking beam 8 upon rocking of the main Walking beam 1. .It includes a turn buckle 16 by means of which necessary adjustments can be made. The wire rope 14 is that of a pump rod 17 which operates in the cylinder 18.A

The operation is readily understood. In Figurel the main walking bea-m 1 is shown in full lines as occupying the intermediate position in respect to the range of its rocking motion. I the pump rope 14 were suspended from'the free extremity of the main walking beam 1 the amount of throw or reciprocation would be no greater than the amount of movement represented between the dotted line positions a and b `o1? the mainwalking beam.

Assume that the free` end of the crank 4 reaches the upper extremity o of its moveik ment.. The main walking beam 1 will assulne the position a. Thev trunnion 9 of the auxiliary beam 8 will assume the position d. The weight of the rope 14 and the pumping apparatus suspended therefrom will bring the point of application of the rope to the oint e, the opposite end of the auxiliary ye-am being restrained by the rope 13.

Upon the next half revolution of the bull wheel 5 the pin ofthe crank 4 will assume the position f, whereupon the main walking beam 1 assumes the position b. The trunnion 9 is lifted to the position g causing independent rocking of the auxiliary beam 8 so that the point of application of the pump rope 1,4 assumes the position h. The opposite extremity of the `auxiliary beam is again restrained by the rope 13. It is readily seen that the distance between the points e and la. is considerablygreater than the distance between the dotted line positions of the walking beam 1 at the right extremity. The action of the auxiliary walking beam 8 increases the amplitude of reciprocation of the pump rod and in actual tests has been demonstrated to' increase the output of the well. A well that formerly delivered 5 barrels of oil in a given time was made to yield 8barrels in the same time by use of the auxiliary walking beam without requiring the application of any appreciable increase of power.

vThe the oil as also been shown to be less. The 5 barrels of oil mentioned contained a certain percentage of Water, but by keeping up the action of the pump by means of the auxiliary walking beam the result is to withdraw more oil and not so much water. It is readily seen that the principle of the invention is to provide a `constantly operable auxiliary walking beam, one end of which.

carries the pumping apparatus, the other end being suitably anchored to a fixture that is independent of the main walking beam.

The action is as stated: A marked increase iii the range of reciprocation of the pump cable or rope.

Vhile the construction and arrangement 'of the improved walking beam is that of a generally preferred form, obviously modi# fications and changes may be made without. departing from the spirit ot the invention or the scopey of the claims.

I claim 1. In combination with amain walking beam and pump rod, an auxiliary walking beam rockablynnounted above and upon the main walking beam, means connecting one extremity of lthe auxiliary walking beam with the pump rod, and means to restrain thel opposite end of the auxiliary walking beam producing an independent rocking motion "of t-he auxiliary Walking beam on rocking of the main walking beamand causing ieciprocation of the pump rod, said means plercentage of Water withdrawn with' consisting of a flexible member havin one end attached to the opposite end oy the auxiliary Walking b/eamand `the other end to a fixture.

2. In combination with a main walking beam and pump rod, a trunnion located at one extremity of said walking beam, an auxiliary Walking'beain mounted above the niain walking beam and upon said trunnion, means including a cable connecting one extremity of the auxiliary walking -beam with the pump rod,vand anchoring means including a flexible member in connection with the opposite extremity of tbe auxiliary walking beam restraining such extremity'upon rocking motion of the main walking beam, and producing an independ- `ent rockingr motion of the auxiliary Walkin; v

beam.

3. The combination of a main walkinar beam, an auxiliary walking beam, means by which the auxiliary walking beam is )our-- naled upon one extremity of the main walk- ,4 ,ing beam, anchoring means incliuling a 

